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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 893646Generated: October 25, 2026

Potassium Carbonate → 4,5-Dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]-4-[[4[[3-(trifluoromethyl)phenyl]methyl]1-piperazinyl]acetyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile, hydrochloride

https://huagongshe.com/reaction/893646

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant1-(3-(Trifluoromethyl)benzyl)piperazineHCID 2060855—
Reactant4-(Chloroacetyl)-4,5-dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]pyrazolo[1,5-a]-pyrimidine-3-carbonitrileHCID 15101085—
SolventTolueneHCID 1140—
Product4,5-Dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]-4-[[4[[3-(trifluoromethyl)phenyl]methyl]1-piperazinyl]acetyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile, hydrochlorideHCID 131716670—

Reaction Steps

A mixture of 1.83 g of 4-(chloroacetyl)-7-[3(trifluoromethyl)phenyl]-4,5-dihydro-6methylpyrazolo[1,5-a]pyrimidine-3-carbonitrile, 1,5 g of 3(trifluoromethyl)benzylpiperazine, 2 g of potassium carbonate and 60 ml of toluene was reacted as described in Example 16, giving the base form of the product, which was converted to the hydrochloride salt by the procedure of Example 97, giving 1.78 g, mp 195°-198°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05126340
Source datasetuspto-grants-1992_06
ORD IDord-dc6c85e74c4c422db5e8d300e46fd0f5
Source noteuspto-grants-1992_06